| Corpus Christi to Orbetello | 5,799.18 mi (9,332.88 km) |
| Corpus Christi to Oria | 6,148.82 mi (9,895.57 km) |
| Corpus Christi to Oristano | 5,775.45 mi (9,294.69 km) |
| Corpus Christi to Orta Nova | 6,033.91 mi (9,710.64 km) |
| Corpus Christi to Orte | 5,848.67 mi (9,412.53 km) |
| Corpus Christi to Ortona | 5,938.24 mi (9,556.67 km) |
| Corpus Christi to Orvieto | 5,827.18 mi (9,377.94 km) |
| Corpus Christi to Orzinuovi | 5,637.04 mi (9,071.94 km) |
| Corpus Christi to Osimo | 5,855.88 mi (9,424.13 km) |
| Corpus Christi to Ospitaletto | 5,637.25 mi (9,072.28 km) |
| Corpus Christi to Ostuni | 6,137.10 mi (9,876.71 km) |
| Corpus Christi to Ottaviano | 6,000.34 mi (9,656.62 km) |
| Corpus Christi to Ovada | 5,610.17 mi (9,028.69 km) |
| Corpus Christi to Ozieri | 5,769.74 mi (9,285.50 km) |
| Corpus Christi to Paceco | 6,026.19 mi (9,698.22 km) |
